// 
//  Copyright (C) 1998-2007 J. Andrew McLaughlin
//  
//  This library is free software; you can redistribute it and/or modify it
//  under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation; either version 2.1 of the License, or (at
//  your option) any later version.
//
//  This library is distributed in the hope that it will be useful, but
//  WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
//  General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with this library; if not, write to the Free Software Foundation,
//  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//  perror.c
//

// This "perror" function is similar in function to the one found in
// other standard C libraries

#include <stdio.h>
#include <errno.h>
#include <string.h>


void perror(const char *prefix)
{
  // Prints the appropriate error message corresponding to the error
  // number that we were passed.  Saves application programs from having
  // to necessarily know what all these numbers mean.

  printf("%s: %s\n", (prefix == NULL? "(NULL)" : prefix), strerror(errno));
 
  // Don't change errno.
  return;
}
